Transaction not yet indexed

MKb13fTfFgvZipF6C33rW6Nc28zQ56xwn9GigaLFjmbF1LcPzkSYV7ZN8NzAG2zfZEBsP2g2obH7fsJ8VMES9Ac

The transaction signature is valid but not yet indexed by this RPC node, or the transaction failed before inclusion.